TRADING ACCOUNT ASSETS AND LIABILITIES (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Trading account assets and Trading account liabilities
Trading account assets	$ 290,822		$ 285,928
Trading account liabilities	137,272		108,762
Securities sold, not yet purchased
Trading account assets and Trading account liabilities
Trading account liabilities	78,561		61,508
Derivatives, liabilities
Trading account assets and Trading account liabilities
Trading account liabilities	58,711	[1]	47,254	[1]
Derivatives, assets
Trading account assets and Trading account liabilities
Trading account assets	57,694	[1]	52,821	[1]
Mortgage-backed securities - U.S. agency-sponsored
Trading account assets and Trading account liabilities
Trading account assets	19,779	[2]	23,955	[2]
Mortgage-backed securities - Prime
Trading account assets and Trading account liabilities
Trading account assets	1,371	[2]	1,422	[2]
Mortgage-backed securities - Alt-A
Trading account assets and Trading account liabilities
Trading account assets	602	[2]	721	[2]
Mortgage-backed securities - Subprime
Trading account assets and Trading account liabilities
Trading account assets	1,211	[2]	1,211	[2]
Mortgage-backed securities - Non-U.S. residential
Trading account assets and Trading account liabilities
Trading account assets	702	[2]	723	[2]
Mortgage-backed securities - Commercial
Trading account assets and Trading account liabilities
Trading account assets	2,962	[2]	2,574	[2]
Mortgage-backed securities
Trading account assets and Trading account liabilities
Trading account assets	26,627	[2]	30,606	[2]
U.S. Treasury and federal agency securities
Trading account assets and Trading account liabilities
Trading account assets	21,713		14,837
U.S. Treasury
Trading account assets and Trading account liabilities
Trading account assets	19,664		13,537
Agency obligations
Trading account assets and Trading account liabilities
Trading account assets	2,049		1,300
State and municipal securities
Trading account assets and Trading account liabilities
Trading account assets	2,713		3,207
Foreign government securities
Trading account assets and Trading account liabilities
Trading account assets	76,133		74,856
Corporate
Trading account assets and Trading account liabilities
Trading account assets	28,388		30,534
Equity securities
Trading account assets and Trading account liabilities
Trading account assets	55,662		61,776
Asset-backed securities
Trading account assets and Trading account liabilities
Trading account assets	4,653	[2]	5,616	[2]
Other trading assets
Trading account assets and Trading account liabilities
Trading account assets	$ 17,239	[3]	$ 11,675	[3]

[1] Presented net, pursuant to enforceable master netting agreements. See Note 21 to the Consolidated Financial Statements for a discussion regarding the accounting and reporting for derivatives.

[2] The Company invests in mortgage-backed and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. For mortgage-backed and asset-backed securitizations in which the Company has other involvement, see Note 20 to the Consolidated Financial Statements.

[3] Includes investments in unallocated precious metals, as discussed in Note 23 to the Consolidated Financial Statements. Also includes physical commodities accounted for at the lower of cost or fair value.